Every action has an equal but opposite reaction & this is the perfect gift to prove it! Watch the transfer of energy in this collision of balls.
Metal base, stainless steel balls
This wooden mechanical model is packaged in kit form with straightforward instruction on assembly & has 305 pieces. It is essential to wax each part during assembly to ensure smooth working of the gears. A wonderful project for restless hands with no glue required & a lovely piece of artwork for fun & display once completed.